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A useful macroscopic model that combines an electric field with DLA was developed by Niemeyer, Pietronero, and Weismann in 1984, and is known as the dielectric breakdown model ( DBM ).
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useful and macroscopic
However, for macroscopic processes classical mechanics is able to solve problems which are unmanageably difficult in quantum mechanics and hence remains useful and well used.
Ohm's law, in the form above, is an extremely useful equation in the field of electrical / electronic engineering because it describes how voltage, current and resistance are interrelated on a " macroscopic " level, that is, commonly, as circuit elements in an electrical circuit.
useful and model
Constant angular momentum is extremely useful when dealing with the orbits of planets and satellites, and also when analyzing the Bohr model of the atom.
D. rerio is a common and useful model organism for studies of vertebrate development and gene function.
In the attention schema theory, the value of constructing the feature of awareness and attributing it to a person is to gain a useful predictive model of that person ’ s attentional processing.
The atoms in molecules model developed by Richard Bader was developed in order to effectively link the quantum mechanical picture of a molecule, as an electronic wavefunction, to chemically useful older models such as the theory of Lewis pairs and the valence bond model.
Besides explaining the process of desertification, the model is also useful for developing methods to combat it ( see also: Alternative stable state ).
" The basic model was not very useful out of the box, and adding RAM in the form of core memory typically brought the price up to $ 7, 995.
Ayres and Warr ( 2009 ) present time series of the efficiency of primary energy ( exergy ) conversion into useful work for the US, UK, Austria and Japan revealing dramatic improvements in model accuracy.
Franklin's X-ray diffraction data for DNA and her systematic analysis of DNA's structural features was useful to Watson and Crick in guiding them towards a correct molecular model.
The covering morphisms of groupoids are especially useful because they can be used to model covering maps of spaces.
Lambda phage has been used heavily as a model organism, and has been a rich source for useful tools in microbial genetics, and later in molecular genetics.
:* Rat ( Rattus norvegicus )-particularly useful as a toxicology model ; also particularly useful as a neurological model and source of primary cell cultures, owing to the larger size of organs and suborganellar structures relative to the mouse.
The modern concept of containment provides a useful model for understanding the dynamics of this policy.
As an illustration of an orbit around a planet, the Newton's cannonball model may prove useful ( see image below ).
He finds useful the process model of the many becoming one.
While useful in practice, a more rigorous model accounting for effects such as screening and relaxation probabilities between energy levels gives the Auger energy as:
Changes in thale cress are easily observed, making it a very useful model.
Although A. thaliana has little direct significance for agriculture, it has several traits that make it a useful model for understanding the genetic, cellular, and molecular biology of flowering plants.
Thus chaetognaths may be a useful model for the ancestral bilaterian.
Because pseudogenes are presumed to change without evolutionary constraint, they can serve as a useful model of the type and frequencies of various spontaneous genetic mutations.
Thus a computer instantiating the ' conversation for action ' has the useful ability to model the status of the current social reality independent of any external reality on which social claims may be based.
The threaded programming model provides developers with a useful abstraction of concurrent execution.
useful and combines
As most applications requiring computation are now performed by small digital computers, the remaining useful application is in power sensing, which combines current sensing with voltage sensing in a single Hall effect device.
Another useful list procedure is, which concatenates two existing lists ( i. e. combines two lists into a single list ).
A grief knot ( also what knot ) is a knot which combines the features of a granny knot and a thief knot, producing a result which is not generally useful for working purposes.
A marvel in itself, this distinctive section combines the most useful features of a concordance, reference system, and index, but it is better than any of them separately or all put together in some manner.
A Hogg horn combines several characteristics useful for radio astronomy: it is extremely broad-band, has calculable aperture efficiency, and the walls of the horn shield it from radiation coming from angles outside the main beam axis, so back and sidelobes are so minimal that scarcely any thermal energy is picked up from the ground.
Some useful applications of RubyCocoa are exploration of a Cocoa object's features with irb interactively, prototyping of a Cocoa application, writing a Cocoa application that combines the features of Ruby and Objective-C and wrapping Mac OS X's native GUI for a Ruby script.
There is a cave with a sex-change device, for instance, and scattered about the land are seemingly nonsensical colored messages that eventually combines into useful hints ( as in the first game ).
As a final note, a particularly useful aspect of morphing is the Frolis Maneuver, in which one combines the DNA of several samples from the same species, to create a new being for a morph.
useful and electric
The same can be said of shaving yet the electric razor has proved useful to many men.
This definition of potential, while formal, has little practical application, and a more useful concept is that of electric potential difference, and is the energy required to move a unit charge between two specified points.
The electric field was formally defined as the force exerted per unit charge, but the concept of potential allows for a more useful and equivalent definition: the electric field is the local gradient of the electric potential.
An electric circuit is an interconnection of electric components such that electric charge is made to flow along a closed path ( a circuit ), usually to perform some useful task.
Frequently ( as in the magnetopause and the magnetotail ) it is intuitively more useful to regard the distribution and flow of plasma as the primary effect, producing the observed magnetic structure, with the associated electric currents just one feature of those structures, more of a consistency requirement of the magnetic structure.
In 1961 the American physicist Eugene Kunzler and coworkers at Bell Labs discovered that niobium-tin continues to exhibit superconductivity in the presence of strong electric currents and magnetic fields, making it the first material to support the high currents and fields necessary for useful high-power magnets and electrically powered machinery.
In an electric power system, a load with a low power factor draws more current than a load with a high power factor for the same amount of useful power transferred.
For time-periodic sinusoidal electromagnetic fields, the average power flow per unit time is often more useful, and can be found by treating the electric and magnetic fields as complex vectors as follows ( star * denotes the complex conjugate ):
The electric piano and electronic piano were early efforts that, while being useful instruments in their own right, were not successful in convincingly reproducing the timbre of the piano.
Circuit analysis using electric elements is useful for understanding many practical electrical networks using components.
Cylindrical coordinates are useful in connection with objects and phenomena that have some rotational symmetry about the longitudinal axis, such as water flow in a straight pipe with round cross-section, heat distribution in a metal cylinder, electromagnetic fields produced by an electric current in a long, straight wire, and so on.
The compulsator would be used to power a railgun, and potentially other pulsed energy weapons ( particularly electronic warfare systems ); also, the compulsator could be used in non-pulsed mode to drive a tank with electric motors for limited periods as a kind of " quiet mode ", which could be useful in urban combat.
The electric eel also possesses high-frequency-sensitive tuberous receptors patchily distributed over the body that seem useful for hunting other Gymnotiformes.
The major benefit is the union of two applications in a single system, which is particularly useful for monitoring electric equipment and advanced energy management techniques ( such as OpenADR and OpenHAN ).
Polyphase systems are particularly useful for transmitting power to electric motors.
This is particularly useful in laser physics, where one is interested in the populations of different atomic states in a gas when a time-dependent electric field is applied.
It transforms useful input signal into light, sends it across the dielectric channel, captures light on the output side and transforms it back into electric signal.
The high breakdown voltage of wide bandgap semiconductors is a useful property in high power applications that require large electric fields.
If an asynchronous motor is connected to a capacitor and the shaft turns with above critical speed, an electric hunting occurs which appears as line voltage on the terminals and provides useful function.
Such guitars are still intended purely as electric instruments, and while they do make some sound when the pickups are not used, the tone is weak and not normally considered musically useful.
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